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suter [353]
4 years ago
13

Solve the system by the elimination method 7x+5y=-25 5x+3y=-23

Mathematics
1 answer:
aksik [14]4 years ago
5 0

Step-by-step explanation:

7x+5y=25 ×3 7×-1.5+5y=25

5x+3y= -23 ×5 -10.5 +5y =25

5y= 25 + 10.5

21x+15y=75 5y= 35.5

25x+15y=69 y= 7.1

-4x=6

x=-1.5

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stealth61 [152]
I believe the slope is Undefined.
6 0
3 years ago
Someone please help asap.. what even is this. ill give brainliest
jasenka [17]

<u>Congruency</u> property relates to two or more <em>triangles</em> with similar <em>dimensions</em>, and internal<u> angles</u>. So that the required <u>statements</u> to complete the proof are:

1. <em>definition</em> of a <u>straight</u> angle.

2. <u>subtraction</u> property of equality

3. <em>corresponding</em> sides of <u>similar</u> triangles are <u>proportional</u>

4.<u> transitive</u> property of <em>equality</em>.

The <u>intersection</u> of two or more lines forms a number of <em>angles</em> which depends on the <u>number</u> of lines involved. These <u>angles</u> formed may have <em>similar</em> or<em> different </em>properties.

When two or more <u>triangles</u> have <em>similar</em> lengths of <u>sides</u> and measure internal <u>angles</u>, it can be said that they are congruent. Thus they have some <u>common</u> properties.

Therefore, the appropriate <u>statements</u> to answer the given <em>question </em>are stated below:

  • <em>Definition</em> of a <u>straight</u> angle.
  • <u>Subtraction</u> property of equality.
  • <em>Corresponding</em> sides of <u>similar</u> triangles are <u>proportional.</u>
  • <u>Transitive</u> property of <em>equality</em>.

For more clarifications on the properties of congruent triangles, visit: brainly.com/question/15835221

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6 0
2 years ago
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Answer:

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Hope this helps

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3 years ago
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We have sec  = 1/cos

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Also we have cos = sqrt (1 – sin^2)

Substitute the derived cosine function to sec then we have

Sec = 1/(sqrt(1-sin^2)

3 0
3 years ago
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